US4991567A - Micro-iris retractor - Google Patents

Micro-iris retractor Download PDF

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Publication number
US4991567A
US4991567A US07/465,334 US46533490A US4991567A US 4991567 A US4991567 A US 4991567A US 46533490 A US46533490 A US 46533490A US 4991567 A US4991567 A US 4991567A
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United States
Prior art keywords
tack
apparatus
iris
anterior blade
eye
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US07/465,334
Inventor
II Brooks W. McCuen
Dyson Hickingbotham
Eugene de Juan, Jr.
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Duke University
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Duke University
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Priority to US07/465,334 priority Critical patent/US4991567A/en
Assigned to DUKE UNIVERSITY reassignment DUKE UNIVERSITY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: DE JUAN, EUGENE JR., HICKINGBOTHAM, DYSON, MC CUEN, BROOKS W. II
Application granted granted Critical
Publication of US4991567A publication Critical patent/US4991567A/en
Anticipated expiration legal-status Critical
Application status is Expired - Fee Related legal-status Critical

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007Methods or devices for eye surgery
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/02Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
    • A61B17/0231Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for eye surgery
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A61B2017/00349Needle-like instruments having hook or barb-like gripping means, e.g. for grasping suture or tissue
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/0046Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable
    • A61B2017/00473Distal part, e.g. tip or head

Abstract

This invention concerns the use of stainless steel, disposable tacks to be employed in the mechanical dilation of the iris during opthalmic surgery. Intended for temporary iris fixation, the tack is provided with a hook built onto its proximal end, and with a sharp anterior blade at its distal end. The anterior blade allows easy insertion of the tack through the peripheral cornea of the eye, at the limbal area, and an applicator is provided with a forked holder to firmly grasp the hook in securely placing and removing the tack in the surgical procedure.

Description

FIELD OF THE INVENTION

The present invention relates to the field of opthalmic surgery, in general, and to a tack to be employed in temporary iris fixation for cataract and posterior segment surgery, in particular.

BACKGROUND OF THE INVENTION

As is well known and understood, adequate dilation of the pupil of the eye is essential during cataract and posterior segment surgery. As is also understood, situations exist where the pupil cannot dilate adequately. For example, where there has been a prior surgical intervention, or where the eye has been traumatized, or where there exists a physiological reaction to a manipulation, various methods have been suggested to provide an adequate pupillary opening.

The simplest method involves the use of pharmaceuticals--but, in a significant number of patients, this arrangement often proves ineffective, and sometimes is associated with producing a toxicity to the cornea. A second method for enlarging the pupil is for the surgeon to excise a small wedge of the iris in an attempt to create an adequate pupillary aperture; however, such procedure (termed an "iridectomy") tends to produce an eccentric dilation--rather than a uniform one--and, additionally, releases pigment cells (because of the severance of the iris) which is preferable to avoid. A third method--i.e. mechanical dilation through a retraction of the iris by means of sutures passed through the scleral wall--has been noted to be delicate, time-consuming and awkward to accomplish.

SUMMARY OF THE INVENTION

As will become clear from the following description, the micro-iris retractor of the present invention avoids these limitations, and provides a temporary mechanical dilation in a simple, fast and inexpensive manner, requiring a decreased manipulation within the eye, and producing a reduced trauma to the sclera. As will be seen, the temporary iris fixation follows from the employment of a disposable, small stainless steel tack having a hook built into its proximal end. A sharp anterior blade is provided at the distal end of the tack, to allow for easy insertion through the peripheral cornea of the eye, at the limbal area. An applicator for the iris tack is also described, and in accordance with a preferred embodiment of the invention, is of a type consisting of a steel tube in which a fork holder (or forceps) is encased, to firmly secure the tack during placement, and retracting the tack during removal.

In a preferred usage of the iris tack of the invention, four retractors were noted to be placed (in the manner described below) within a mere two minutes, and providing a four-point retraction (either rectangular or square) for excellent visualization during the surgical intervention.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other features of the invention will be more clearly understood from a consideration of the following description, taken in connection with the accompanying drawings, in which:

FIG. 1 shows an iris tack constructed in accordance with a preferred embodiment of the invention;

FIG. 2 shows a forceps to be employed with an actuator for placing and removing the iris tack in achieving a desired pupillary dilation;

FIG. 3 illustrates how the forceps of FIG. 2 is actuated to grasp the iris tack of FIG. 1; and

FIGS. 4-6 are helpful in an understanding of the method of inserting and removing the iris tack as part of the opthalmic surgerical procedure.

DETAILED DESCRIPTION OF THE DRAWINGS

Referring to the tack of FIG. 1, is will be understood that reference numeral 10 identifies a hook-eyelet section built onto the proximal end of the tack (denoted by the designation A), with the tack being made of stainless steel. At the distal end B, a sharp, anterior blade 12 is shown, to permit easy insertion through the peripheral cornea of the eye at the limbal area (see FIGS. 4-6). So as to facilitate use of the tack in the opthalmic surgery procedures envisioned for pupil dilation, the following dimensions have been found to be particularly useful, with reference being had to FIG. 1, and with the understanding that all dimensions are measured in millimeters:

______________________________________Dimension 100      4.0    millimetersDimension 101      2.0    millimetersDimension 102      0.45   millimetersDimension 103      0.80   millimeters______________________________________

and with the tack being fabricated of a stainless steel hardened wire of 0.20 millimeter diameter.

FIG. 2 shows an appropriate forceps for the iris tack, as extending through a stainless steel tube 20 of a typical 20 gauge thickness, with the tip end 24 arranged to insert into the hook-eyelet 10 of FIG. 1, and ready for actuation by means of a stainless steel wire connect 26 of some 0.350 millimeter diameter. As will be appreciated, the tip of the forceps 24 is arranged to pass through the eye 10 of the tack on a plane perpendicular to the metal eyelet 10 (FIG. 3) and with the forceps being of a spring loaded type as manufactured by Grieshaber & Co. A.G. of Schaffhausen, Switzerland, and identified as their Sutherland Rotatable Intraocular Micro Forceps. Such forceps are also available from their New York representative Grieshaber & Co., of 3000 Cabot Boulevard West, Langhorne, Penn. and operate by a pressure applied to a finger lever in a manner such that when the pusher is released, the hook portion 24 retracts to pull the eyelet 10 into the grooves and notches of the forceps to securely hold the tack in place.

Referring now to FIGS. 4-6, it will be appreciated that the first step in the use of the micro-iris retractor of the invention is to depress the finger lever of the Grieshaber Sutherland Forceps (or other type arrangement) employed to expose the hook portion 24 (FIG. 2). The hook portion 24 is then inserted into the eyelet 10 of the iris tack, and the finger lever released so that the hook portion 24 retracts to grasp the tack for insertion. With the iris tack then secured at the hook portion 24, the surgical insertion is made at the sclerotomy site selected, preferably through a cannula 30, of 20 gauge (FIG. 4). With the anterior blade 12 of the tack being positioned posteriorly and beneath the iris, engagement of the iris then follows between the anterior blade 12 and the lower, rounded edge 16 of the tack extending from the hook-eyelet 10 (FIG. 5). Continuing the procedure, the iris is then retracted by inserting the anterior blade 12 into and through the scleral wall of the eye at the limbal area to firmly secure the tack during placement.

With the pupillary edge of the iris thus secured in this manner in the inferotemporal quadrant, the finger lever of the forceps is once again depressed to expose the hook portion 24 and release it from the tack (FIG. 6). With the iris tack then secured, a second tack is placed through the same sclerotomy and directed to fix the iris in position in like manner in the superonasal quadrant. A pair of tacks are thus placed anterior to the lens. Likewise, and in a similar manner,--it being understood that the first two iris tacks were emplaced from the superotemporal sclerotomy--a second pair of iris tacks are emplaced infertemporally and superotemporally by tacks applied from the superonasal sclerotomy. The fixation of the iris in these described four quadrants, using the conventional sclerotomies, thus produces a rectangular pupil which affords excellent dilation for work in the vitreous cavity, and particularly where the individual ones of the pairs of tacks are secured only several millimeters apart.

Again, as the finger lever is depressed, the hook portion 24 frees from, and may be slid from, the eyelet 10 and the forceps then may be removed.

As will be readily apparent, the secured tacks may be removed after the surgical procedure, in a similar, but reversed manner. At the conclusion of the procedure, with the iris tacks each removed, the pupil has been noted to rapidly return to its normal configuration postoperatively, with only a mild irregularly and residual enlargement being occasionally present. A widely dilated pupil was thus able to be obtained at the time of surgery, and with a postoperative return of the pupil to a near normal, preoperative configuration, without complications flowing from the use of the iris tacks.

As will be apparent to those skilled in the art, the micro-iris retractor arrangement described affords only a temporary use during a surgical procedure, and thus offers distinct advantages over the prior method of performing an iridectomy in which there is a permanent removal of the iris tissue and/or a severance of the pupillary sphincter. In comparison with the alternative method of retraction through the use of sutures, the desribed method with the micro-iris retractor is simpler, faster and requires less manipulation with the eye in use, while at the same time affording a decreased trauma to the sclera.

While there has been described what is considered to be a preferred embodiment of the present invention, it will be understood by those skilled in the art that modifications can be made without departing from the scope of the teachings herein. For example, although the iris tack of the invention has been described as being fabricated of stainless steel, it will be appreciated that alternative materials may be employed, such as a cobalt/nickel/chromium/molybdenum/tungsten/iron alloy commonly referred to as "syntacoben". In like manner, other, alternative delivery systems might be envisioned--encompassing, perhaps, a modification of that portion of the tack which is grasped by the forceps, as well as a modification of the forceps employed so as to cooperate with the form of tack in securely placing into, or removing from, the iris margin. In this regard, it is to be understood, however, that so long as the pupil is fixed within the meridian of the tack--i.e. between the sharp anterior blade 12 and the shorter bearing edge 16--, the objectives of the invention will be satisfied. For at least such reasons, therefore, resort should be had to the claims appended hereto for a true understanding of the scope of the invention.

Claims (9)

We claim:
1. Apparatus affording pupillary dilation for intraocular surgery, comprising:
a tack for temporarily securing the iris in place during a surgical procedure;
and an applicator, manually adjustable for grasping said tack and for releasing said tack, in the insertion of said tack into position and in its removal, as the case may be;
and with said tack having an anterior blade and a bearing projection at a distal end, forming a meridian therebetween in which the iris is held in place when said tack is inserted into position in the eye.
2. The apparatus of claim 1 wherein said tack has an anterior blade, sharpened to facilitate insertion of said tack into the eye.
3. The apparatus of claim 1 wherein said applicator includes a lever, finger actuated to manually grasp said tack when said lever is released.
4. The apparatus of claim 1 wherein said tack includes an eyelet at a proximal end, grasped and released by said applicator in the insertion and removal of said tack when positioned.
5. The apparatus of claim 4 wherein said applicator includes a springloaded hook to manually grasp said eyelet in the insertion and removal of said tack.
6. The apparatus of claim 4 wherein said tack is fabricated of a continuous length of hardened metal, looped so as to form said eyelet and so that said anterior blade and bearing projection are formed and from the opposite ends of said continuous length.
7. The apparatus of claim 6 wherein said anterior blade extends a further distance towards the distal end of said tack than does said bearing projection.
8. The apparatus of claim 7 wherein said anterior blade is formed to a point to facilitate insertion into the eye, and wherein said bearing projection is formed of a rounded edge.
9. The apparatus of claim 6 wherein said tack is fabricated of stainless steel.
US07/465,334 1990-01-16 1990-01-16 Micro-iris retractor Expired - Fee Related US4991567A (en)

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Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5171240A (en) * 1990-06-22 1992-12-15 Yuthaphong Hanwong Instrument for implantation of a prosthesis in a stapedectomy procedure
US5174279A (en) * 1991-03-06 1992-12-29 Duke University Medical Center Iris retractor for use in operations on the eye of a living creature
WO1993009721A1 (en) * 1991-11-21 1993-05-27 Kensey Nash Corporation Apparatus and methods for clamping tissue and reflecting the same
US5318011A (en) * 1992-02-04 1994-06-07 Escalon Ophthalmics, Inc. Iris protector/dilator and method of using the same
US5427088A (en) * 1992-02-18 1995-06-27 Graether; John M. Apparatus for inserting a pupil expander
US5437266A (en) * 1992-07-02 1995-08-01 Mcpherson; William Coil screw surgical retractor
US5634884A (en) * 1992-02-18 1997-06-03 Graether Development Corporation Apparatus for inserting a pupil expander
US5807244A (en) * 1996-11-15 1998-09-15 Barot; Jagdish Shantilal Single use disposable iris retractor
WO1999037215A1 (en) * 1998-01-22 1999-07-29 Johns Hopkins University Shape memory and superelastic iris retractors
WO2001017441A1 (en) * 1999-09-03 2001-03-15 Coalescent Surgical, Inc. Surgical clip removal apparatus
US20010018592A1 (en) * 1999-03-01 2001-08-30 Laurent Schaller Bridge clip tissue connector apparatus and methods
US6299617B1 (en) 1998-03-30 2001-10-09 John Stamler Instrument for fixating the eye during cataract surgery
US6561974B1 (en) * 2000-05-31 2003-05-13 Grieshaber & Co. Ag Schaffhausen Device for use in a surgical procedure on an eye of a living being, and method of retracting the iris
US20030191481A1 (en) * 2000-03-31 2003-10-09 John Nguyen Multiple bias surgical fastener
US20030195531A1 (en) * 1998-06-03 2003-10-16 Barry Gardiner Tissue connector apparatus and methods
US6648819B2 (en) * 2001-11-15 2003-11-18 Yau Wing Lee Pupil dilator
US20040054303A1 (en) * 2002-07-29 2004-03-18 Taylor Geoffrey L. Blanching response pressure sore detector apparatus and method
US20040068276A1 (en) * 2002-10-04 2004-04-08 Steve Golden Anastomosis apparatus and methods
US20040111099A1 (en) * 2000-10-10 2004-06-10 Coalescent Surgical, Inc. Minimally invasive valve repair procedure and apparatus
US20050043749A1 (en) * 2003-08-22 2005-02-24 Coalescent Surgical, Inc. Eversion apparatus and methods
US20050065601A1 (en) * 2002-04-18 2005-03-24 Coalescent Surgical, Inc. Annuloplasty apparatus and methods
US20050075659A1 (en) * 2003-03-30 2005-04-07 Fidel Realyvasquez Apparatus and methods for minimally invasive valve surgery
US20050075667A1 (en) * 1999-03-01 2005-04-07 Laurent Schaller Tissue connector apparatus and methods
US20060004389A1 (en) * 1998-06-03 2006-01-05 Medtronic, Inc. Multiple loop tissue connector apparatus and methods
US20060293701A1 (en) * 2001-05-02 2006-12-28 Medtronic, Inc. Self-closing surgical clip for tissue
US20070142848A1 (en) * 2003-07-25 2007-06-21 Stephen Ainsworth Sealing clip, delivery systems, and methods
US20080188860A1 (en) * 2007-02-07 2008-08-07 Vold Steven D Ophthalmic surgical apparatus
WO2008115455A1 (en) * 2007-03-15 2008-09-25 Microsurgical Technology Ring used in a small pupil phacoemulsification procedure
WO2008115454A1 (en) * 2007-03-15 2008-09-25 Microsurgical Technology A method for assembling a ring used in a small pupil phaco procedure
US20080249546A1 (en) * 2007-01-05 2008-10-09 Sandstrom Jeffrey D Anastomosis systems and methods
US20090264903A1 (en) * 2008-03-10 2009-10-22 Medtronic, Inc. Apparatus and methods for minimally invasive valve repair
US7763040B2 (en) 1998-06-03 2010-07-27 Medtronic, Inc. Tissue connector apparatus and methods
US7879047B2 (en) 2003-12-10 2011-02-01 Medtronic, Inc. Surgical connection apparatus and methods
US7938840B2 (en) 1999-04-05 2011-05-10 Medtronic, Inc. Apparatus and methods for anastomosis
US7976556B2 (en) 2002-09-12 2011-07-12 Medtronic, Inc. Anastomosis apparatus and methods
US8439833B2 (en) 2011-10-18 2013-05-14 Oasis Medical, Inc. Ophthalmic structure
US8496583B1 (en) 2012-11-03 2013-07-30 Michael Reynard Pupil dilation system
US8518060B2 (en) 2009-04-09 2013-08-27 Medtronic, Inc. Medical clip with radial tines, system and method of using same
US8668704B2 (en) 2009-04-24 2014-03-11 Medtronic, Inc. Medical clip with tines, system and method of using same
US8852091B2 (en) 2012-04-04 2014-10-07 Alcon Research, Ltd. Devices, systems, and methods for pupil expansion
US8900136B2 (en) 2013-03-15 2014-12-02 Beaver-Visitec International (Us), Inc. Iris expander
US20150065809A1 (en) * 2009-11-02 2015-03-05 Apx Ophthalmology Ltd. Iris retractor
US20150265269A1 (en) * 2007-03-15 2015-09-24 Boris Malyugin Expansion Ring For Eyeball Tissue
US9265514B2 (en) 2012-04-17 2016-02-23 Miteas Ltd. Manipulator for grasping tissue
US9504459B1 (en) * 2015-06-30 2016-11-29 Ravi Nallakrishnan Revocable Trust Surgical apparatus and method of use thereof
US20170238956A1 (en) * 2016-02-18 2017-08-24 Crea Ip B.V. Serrated forceps

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Cited By (88)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5171240A (en) * 1990-06-22 1992-12-15 Yuthaphong Hanwong Instrument for implantation of a prosthesis in a stapedectomy procedure
US5174279A (en) * 1991-03-06 1992-12-29 Duke University Medical Center Iris retractor for use in operations on the eye of a living creature
WO1993009721A1 (en) * 1991-11-21 1993-05-27 Kensey Nash Corporation Apparatus and methods for clamping tissue and reflecting the same
US5242456A (en) * 1991-11-21 1993-09-07 Kensey Nash Corporation Apparatus and methods for clamping tissue and reflecting the same
US5318011A (en) * 1992-02-04 1994-06-07 Escalon Ophthalmics, Inc. Iris protector/dilator and method of using the same
US5441045A (en) * 1992-02-04 1995-08-15 Escalon Ophthalmics, Inc. Apparatus for deforming an iris dilator
US5427088A (en) * 1992-02-18 1995-06-27 Graether; John M. Apparatus for inserting a pupil expander
US5634884A (en) * 1992-02-18 1997-06-03 Graether Development Corporation Apparatus for inserting a pupil expander
US5437266A (en) * 1992-07-02 1995-08-01 Mcpherson; William Coil screw surgical retractor
US5573496A (en) * 1992-07-02 1996-11-12 Mcpherson; William E. Method of using a coil screw surgical retractor
US5807244A (en) * 1996-11-15 1998-09-15 Barot; Jagdish Shantilal Single use disposable iris retractor
WO1999037215A1 (en) * 1998-01-22 1999-07-29 Johns Hopkins University Shape memory and superelastic iris retractors
US6299617B1 (en) 1998-03-30 2001-10-09 John Stamler Instrument for fixating the eye during cataract surgery
US7963973B2 (en) 1998-06-03 2011-06-21 Medtronic, Inc. Multiple loop tissue connector apparatus and methods
US20060004389A1 (en) * 1998-06-03 2006-01-05 Medtronic, Inc. Multiple loop tissue connector apparatus and methods
US7763040B2 (en) 1998-06-03 2010-07-27 Medtronic, Inc. Tissue connector apparatus and methods
US20030195531A1 (en) * 1998-06-03 2003-10-16 Barry Gardiner Tissue connector apparatus and methods
US20010018592A1 (en) * 1999-03-01 2001-08-30 Laurent Schaller Bridge clip tissue connector apparatus and methods
US7722643B2 (en) 1999-03-01 2010-05-25 Medtronic, Inc. Tissue connector apparatus and methods
US8118822B2 (en) 1999-03-01 2012-02-21 Medtronic, Inc. Bridge clip tissue connector apparatus and methods
US8353921B2 (en) 1999-03-01 2013-01-15 Medtronic, Inc Tissue connector apparatus and methods
US7892255B2 (en) 1999-03-01 2011-02-22 Medtronic, Inc. Tissue connector apparatus and methods
US20050075667A1 (en) * 1999-03-01 2005-04-07 Laurent Schaller Tissue connector apparatus and methods
US7938840B2 (en) 1999-04-05 2011-05-10 Medtronic, Inc. Apparatus and methods for anastomosis
WO2001017441A1 (en) * 1999-09-03 2001-03-15 Coalescent Surgical, Inc. Surgical clip removal apparatus
US8529583B1 (en) 1999-09-03 2013-09-10 Medtronic, Inc. Surgical clip removal apparatus
US20030191481A1 (en) * 2000-03-31 2003-10-09 John Nguyen Multiple bias surgical fastener
US7896892B2 (en) 2000-03-31 2011-03-01 Medtronic, Inc. Multiple bias surgical fastener
US8353092B2 (en) 2000-03-31 2013-01-15 Medtronic, Inc. Multiple bias surgical fastener
US6561974B1 (en) * 2000-05-31 2003-05-13 Grieshaber & Co. Ag Schaffhausen Device for use in a surgical procedure on an eye of a living being, and method of retracting the iris
US20110213387A1 (en) * 2000-10-10 2011-09-01 Medtronic, Inc. Minimally Invasive Valve Repair Procedure and Apparatus
US7914544B2 (en) 2000-10-10 2011-03-29 Medtronic, Inc. Minimally invasive valve repair procedure and apparatus
US7744611B2 (en) 2000-10-10 2010-06-29 Medtronic, Inc. Minimally invasive valve repair procedure and apparatus
US20040111099A1 (en) * 2000-10-10 2004-06-10 Coalescent Surgical, Inc. Minimally invasive valve repair procedure and apparatus
US20050101975A1 (en) * 2000-10-10 2005-05-12 Medtronic, Inc. Minimally invasive valve repair procedure and apparatus
US20060293701A1 (en) * 2001-05-02 2006-12-28 Medtronic, Inc. Self-closing surgical clip for tissue
US6648819B2 (en) * 2001-11-15 2003-11-18 Yau Wing Lee Pupil dilator
US20050065601A1 (en) * 2002-04-18 2005-03-24 Coalescent Surgical, Inc. Annuloplasty apparatus and methods
US20040054303A1 (en) * 2002-07-29 2004-03-18 Taylor Geoffrey L. Blanching response pressure sore detector apparatus and method
US8066724B2 (en) 2002-09-12 2011-11-29 Medtronic, Inc. Anastomosis apparatus and methods
US7976556B2 (en) 2002-09-12 2011-07-12 Medtronic, Inc. Anastomosis apparatus and methods
US8105345B2 (en) 2002-10-04 2012-01-31 Medtronic, Inc. Anastomosis apparatus and methods
US8298251B2 (en) 2002-10-04 2012-10-30 Medtronic, Inc. Anastomosis apparatus and methods
US20040068276A1 (en) * 2002-10-04 2004-04-08 Steve Golden Anastomosis apparatus and methods
US20080154290A1 (en) * 2002-10-04 2008-06-26 Steve Golden Anastomosis apparatus and methods
US20050075659A1 (en) * 2003-03-30 2005-04-07 Fidel Realyvasquez Apparatus and methods for minimally invasive valve surgery
US20070142848A1 (en) * 2003-07-25 2007-06-21 Stephen Ainsworth Sealing clip, delivery systems, and methods
US8211124B2 (en) 2003-07-25 2012-07-03 Medtronic, Inc. Sealing clip, delivery systems, and methods
US20050043749A1 (en) * 2003-08-22 2005-02-24 Coalescent Surgical, Inc. Eversion apparatus and methods
US8029519B2 (en) 2003-08-22 2011-10-04 Medtronic, Inc. Eversion apparatus and methods
US7879047B2 (en) 2003-12-10 2011-02-01 Medtronic, Inc. Surgical connection apparatus and methods
US20080249546A1 (en) * 2007-01-05 2008-10-09 Sandstrom Jeffrey D Anastomosis systems and methods
US20080188860A1 (en) * 2007-02-07 2008-08-07 Vold Steven D Ophthalmic surgical apparatus
WO2008115455A1 (en) * 2007-03-15 2008-09-25 Microsurgical Technology Ring used in a small pupil phacoemulsification procedure
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